/// <summary>
/// Assignes selected projection and displays results
/// </summary>
public bool Assign(string filename, ISpatialReference proj)
{
var projWgs84 = new SpatialReference();
if (!projWgs84.ImportFromEpsg(4326))
{
MessageService.Current.Warn("Failed to initialize WGS84 coordinate system.");
return(false);
}
bool sameProj = proj.IsSame(projWgs84);
int count = 0;
bool success = false;
int rowIndex = dgv.Rows.Add();
_shapefile = new FeatureSet(filename);
Text = @"Assigning projection: " + Path.GetFileName(filename);
lblProjection.Text = @"Projection: " + proj.Name;
// it will be faster to assing new instance of class
// as ImportFromEPSG() is slow according to GDAL documentation
_shapefile.Projection.CopyFrom(proj);
if (!sameProj)
{
// we can't show preview on map without reprojection
if ((_shapefile.StartEditingShapes()))
{
if (_shapefile.ReprojectInPlace(projWgs84, ref count))
{
success = true;
}
}
}
else
{
success = true;
}
if (success)
{
AddShapefile(_shapefile);
return(true);
}
// no success in reprojection
_shapefile.Close();
return(false);
}